NSIDC-0064_1

Nenana Ice Classic: Tanana River Ice Annual Breakup Dates, Version 1

Version 1 eng; usa
  • Abstract
    The Tanana river in the Interior of Alaska usually freezes over during October and November. The ice continues to grow throughout the winter accumulating an average maximum thickness of about 110 cm, depending upon winter weather conditions. The Nenana Ice Classic competition began in 1917 when railroad engineers bet a total of 800 dollars, winner takes all, guessing the exact time (month, day, hour, minute) ice on the Tanana River would break up. Each year since then, Alaska residents have guessed at the timing of the river breakup. A tripod, connected to an on-shore clock with a string, is planted in two feet of river ice during river freeze-up in October or November. The following spring, the clock automatically stops when the tripod moves as the ice breaks up. The time on the clock is used as the river ice breakup time. Many factors influence the river ice breakup, such as air temperature, ice thickness, snow cover, wind, water temperature, and depth of water below the ice. Generally, the Tanana river ice breaks up in late April or early May (historically, April 20 to May 20). The time series of Tanana river ice breakup dates can be used to indicate climate change in the region.
  • Purpose
    Scientific Research
  • DOI

    10.5067/DURFYP131STS

Data Identification Fields:

Toggle Data Identification Fields
    Processing Level

    Level 2

    Derived geophysical variables

    Quality
    Collection Progress

    Planned

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Snow/Ice
    • Freeze/Thaw
    • EARTH SCIENCE
    • Cryosphere
    • Snow/Ice
    • Freeze/Thaw
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Snow/Ice
    • Ice Growth/Melt
    • EARTH SCIENCE
    • Cryosphere
    • Snow/Ice
    • Ice Growth/Melt
    • EARTH SCIENCE
    • Terrestrial Hydrosphere
    • Snow/Ice
    • River Ice
    • EARTH SCIENCE
    • Cryosphere
    • Snow/Ice
    • River Ice

Acquisition Information Fields:

Toggle Acquisition Information Fields
Platforms
  • In Situ Land-based Platforms
    GROUND STATIONS
    Instruments
    • CLOCKS

Temporal Information Fields:

Toggle Temporal Information Fields

Spatial Information Fields:

Toggle Spatial Information Fields
    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords

Data Centers

Toggle Data Centers
  • NSIDC
    ARCHIVER

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

    Archiving Data Center

    http://nsidc.org
    • Home Page
  • NSIDC
    DISTRIBUTOR

    National Snow and Ice Data Center
    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email

    Archiving Data Center

    http://nsidc.org
    • Home Page

Data Contacts

Toggle Data Contacts
  • NSIDC Services
    Technical Contact
    NSIDC Services

    CIRES, 449 UCB
    University of Colorado
    Boulder, CO 80309-0449

    • 1 303 492 6199
    • 1 303 492 2468
    • Email
  • Nenana Classic
    Technical Contact
    Nenana Classic

    This contact does not have any addresses listed.

    This contact does not have any contact mechanisms listed.

  • National Snow and Ice Data Center
    User Services
    National Snow and Ice Data Center

    Boulder, Colorado

    This contact does not have any contact mechanisms listed.

Collection Citations Fields:

Toggle Collection Citations Fields
    Collection Citations
    • Nenana Ice Classic: Tanana River Ice Annual Breakup Dates, Version 1
      1

      Published by: National Snow and Ice Data Center

Archive And Distribution Information Fields:

Toggle Archive And Distribution Information Fields

There is no archive and distribution information for this collection.